package day04;

import java.util.Scanner;

public class CommandBySwitch {
    public static void main(String[] args) {
        double balance=0;
        System.out.println("请输入您的选项：1.存款 2.取款 3.查询余额 4.退卡");
        Scanner sc = new Scanner(System.in);


        while (true){
            int switch1 = sc.nextInt();
        if (switch1>4||switch1<1){
            System.out.println("您的输入有误");
            System.out.println("请输入您的选项：1.存款 2.取款 3.查询余额 4.退卡");
        }else {
            switch (switch1){
                case 1:
                    System.out.println("----------输入您的存款金额：------------");
                    balance += sc.nextDouble();
                    System.out.println("----------1您的余额为："+balance+"----------");
                    break;
                case 2:
                    System.out.println("----------输入您的取款金额----------：");
                    double draw =sc.nextDouble();
                    if (balance>=draw){
                        balance -=draw;
                        System.out.println("-----------您的余额为："+balance+"------------");
                    }else {
                        System.out.println("-----------您的余额不足-------------");
                    }

                    break;
                case 3:
                    System.out.println("-----------您的余额为:"+balance+"----------");
                    break;
                case 4:
                    System.out.println("-----------退卡成功-----------");
                    break;
            }
        }

    }}
}
